- COM fuel
- comic
- Comical Chinese Opera
- Comical Dance Performance
- comic guessing
- Comic Mystery
- Comic Novels
- comic opera
- comic talk
- comic talk in Shanghai dialect
- Comilla
- Coming Back from Xiao's Garden
- Coming Home
- Coming of Age in Samoa
- coming out
- Coming Rain
- Coming Through Slaughter
- cominor
- COMINT
- comitant
- Comite Maritime International Uniform Rules for Electronic Bills of Lading
- Comite Maritime International Uniform Rules for Sea Waybills
- Comité Consultatif du Temps et des Fréquences
- Comité Consultatif pour la Definition de la Seconde
- Comité International des Poids et Mesures